File indexing completed on 2024-05-12 05:32:16

 /*
     SPDX-FileCopyrightText: 2023 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #pragma once
 
 #include <sys/mman.h>
 #include <utility>
 
 namespace KWin
 {
 
 class MemoryMap
 {
 public:
     MemoryMap()
         : m_data(MAP_FAILED)
         , m_size(0)
     {
     }
 
     MemoryMap(int size, int prot, int flags, int fd, off_t offset)
         : m_data(mmap(nullptr, size, prot, flags, fd, offset))
         , m_size(size)
     {
     }
 
     MemoryMap(MemoryMap &&other)
         : m_data(std::exchange(other.m_data, MAP_FAILED))
         , m_size(std::exchange(other.m_size, 0))
     {
     }
 
     ~MemoryMap()
     {
         if (m_data != MAP_FAILED) {
             munmap(m_data, m_size);
         }
     }
 
     MemoryMap &operator=(MemoryMap &&other)
     {
         if (m_data != MAP_FAILED) {
             munmap(m_data, m_size);
         }
         m_data = std::exchange(other.m_data, MAP_FAILED);
         m_size = std::exchange(other.m_size, 0);
         return *this;
     }
 
     inline bool isValid() const
     {
         return m_data != MAP_FAILED;
     }
 
     inline void *data() const
     {
         return m_data;
     }
 
     inline int size() const
     {
         return m_size;
     }
 
 private:
     void *m_data;
     int m_size;
 };
 
 } // namespace KWin